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Title

Enhancement of Melanocortin-4 Receptor (MC4R) and Constancy of Kiss1 mRNAs Expression in the Hypothalamic Arcuate Nucleus in a Model of Polycystic Ovary Syndrome Rat

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Abstract

 Background: Hypothalamic Melanocortin-4 Receptor (MC4R) and kiss1/Kisspeptin systems play roles in reproductive processes. This study was conducted to evaluate changes in MC4R and kiss1 genes expression in the arcuate nucleus (ARC) of the hypothalamus and its relationship with Polycystic Ovary Syndrome (PCOS) in Rats. Materials and Methods: In the current experimental study, 24 female Rats were randomly and equally allocated into nulliparous and primiparous groups and then were divided into two subgroups of PCOS and control. PCOS was induced by exposure to continuous Light. Sex-related hormones were evaluated by radioimmunoassay or immunoradiometric assay. Expressions of MC4R and kiss1 gene in the ARC of the hypothalamus of the Rats were evaluated by real-time PCR. Histomorphometric alterations of ovaries were compared between groups. Results: Number of tertiary follicles and their size and number of atretic follicles in the PCOS subgroups were more than those in the controls (P<0. 05) whereas the number of secondary follicles and corpus luteum in the PCOS subgroups were lower than those in the controls (P<0. 05). Antrum and total diameters of tertiary follicles in the PCOS subgroups were greater and granulosa layer diameter was lower than those in the controls (P<0. 05). The MC4R mRNA expression in the PCOS subgroups was 6. 5-fold in nulliparous and 3. 5-fold in primiparous groups more than their controls’ pairs (P<0. 05). However, parity did not affect the expression of MC4R gene (P>0. 05). The kiss1 mRNA expression in the PCOS and control subgroups was not significantly different (P>0. 05). Conclusion: Overexpression of MC4R gene after PCOS induction in the ARC of the hypothalamus may link to metabolic disorders of induced PCOS in the Rats. However, alteration in the kiss1 mRNA expression after PCOS induction was not observed in the Rats.

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    APA: Copy

    NOORANIZADEH, MOHAMMAD HOSSEIN, RAHMANIFAR, FARHAD, AHMADLOO, SOMAYEH, SHAABAN, ZAHRA, JAFARZADEH SHIRAZI, MOHAMMAD REZA, & TAMADON, AMIN. (2018). Enhancement of Melanocortin-4 Receptor (MC4R) and Constancy of Kiss1 mRNAs Expression in the Hypothalamic Arcuate Nucleus in a Model of Polycystic Ovary Syndrome Rat. GALEN MEDICAL JOURNAL, 7(1), 0-0. SID. https://sid.ir/paper/786078/en

    Vancouver: Copy

    NOORANIZADEH MOHAMMAD HOSSEIN, RAHMANIFAR FARHAD, AHMADLOO SOMAYEH, SHAABAN ZAHRA, JAFARZADEH SHIRAZI MOHAMMAD REZA, TAMADON AMIN. Enhancement of Melanocortin-4 Receptor (MC4R) and Constancy of Kiss1 mRNAs Expression in the Hypothalamic Arcuate Nucleus in a Model of Polycystic Ovary Syndrome Rat. GALEN MEDICAL JOURNAL[Internet]. 2018;7(1):0-0. Available from: https://sid.ir/paper/786078/en

    IEEE: Copy

    MOHAMMAD HOSSEIN NOORANIZADEH, FARHAD RAHMANIFAR, SOMAYEH AHMADLOO, ZAHRA SHAABAN, MOHAMMAD REZA JAFARZADEH SHIRAZI, and AMIN TAMADON, “Enhancement of Melanocortin-4 Receptor (MC4R) and Constancy of Kiss1 mRNAs Expression in the Hypothalamic Arcuate Nucleus in a Model of Polycystic Ovary Syndrome Rat,” GALEN MEDICAL JOURNAL, vol. 7, no. 1, pp. 0–0, 2018, [Online]. Available: https://sid.ir/paper/786078/en

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